Added link to calculate-parts

README.md

@@ -38,7 +38,7 @@ Mixes two inputs onto two outputs using 4 Potentiometers.
 | ---- | ----- | --- |
 | <img src="gerbers/MAMI-QUAD_Combined_Top.png" width="200px"> | <img src="gerbers/MAMI-QUAD_Combined_Bottom.png" width="200px"> | <img src="images/3d-quad.png" width="200px"> |
 
-The summing section looks like this and allows a jumper ()`J_ATT1` and `J_ATT2`) or a switch (2.54mm lead spacing) to be used to switch between unipolar and bipolar attenuation for each row seperately.  
+The summing section looks like this and allows a jumper (`J_ATT1` and `J_ATT2`) or a switch (2.54mm lead spacing) to be used to switch between unipolar and bipolar attenuation for each row seperately.  
 ![](images/schematic_summing.png)
 
 
@@ -52,4 +52,9 @@ Provides two 3.5mm Mono output jacks, with a Jumper (or switch) each row of tile
 
 # Panels
 
-Constructing a panel is straightforward: drill holes for all potentiometers, switches and jacks. There is an example panel for a 8x8 Matrix in the `panels` directory
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+Constructing a panel is straightforward: drill holes for all potentiometers, switches and jacks. 
+There is an example panel for a 8x8 Matrix in the [panels](panels) directory.
+
+# Parts/BOM
+
+Use the python code in [calculate-parts.ipynb](https://code.hfbk.net/sdiy/mami/blob/master/calculate-parts.ipynb) to calculate the needed parts for your variant of the MAMI
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